3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'A'; echo "$$a";

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.40.0170.00018.84
8.3.30.0080.00618.83
8.3.20.0040.00420.09
8.3.10.0080.00021.79
8.3.00.0050.00317.55
8.2.170.0090.00922.96
8.2.160.0100.01020.53
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0030.01426.16
8.2.120.0050.00320.95
8.2.110.0060.00322.26
8.2.100.0090.00319.63
8.2.90.0000.00819.23
8.2.80.0050.00317.97
8.2.70.0030.00717.63
8.2.60.0060.00317.91
8.2.50.0090.00018.07
8.2.40.0030.00618.09
8.2.30.0000.00718.23
8.2.20.0080.00017.67
8.2.10.0000.00717.92
8.2.00.0040.00417.59
8.1.270.0090.00023.63
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.83
8.1.230.0120.00019.09
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0070.00417.22
8.1.190.0080.00017.23
8.1.180.0050.00218.10
8.1.170.0000.00818.57
8.1.160.0040.00421.97
8.1.150.0030.00618.74
8.1.140.0070.00017.39
8.1.130.0000.00717.82
8.1.120.0040.00417.39
8.1.110.0090.00017.41
8.1.100.0040.00417.33
8.1.90.0030.00517.30
8.1.80.0040.00417.35
8.1.70.0030.00317.37
8.1.60.0030.00617.52
8.1.50.0040.00417.34
8.1.40.0000.00717.39
8.1.30.0030.00617.50
8.1.20.0040.00417.48
8.1.10.0040.00417.40
8.1.00.0040.00417.48
8.0.300.0000.00718.77
8.0.290.0070.00016.63
8.0.280.0000.00718.32
8.0.270.0000.00717.25
8.0.260.0030.00317.24
8.0.250.0000.00716.92
8.0.240.0050.00216.93
8.0.230.0000.00716.88
8.0.220.0050.00316.89
8.0.210.0070.00016.79
8.0.200.0000.00816.90
8.0.190.0040.00416.84
8.0.180.0000.00716.89
8.0.170.0000.00716.81
8.0.160.0030.00516.82
8.0.150.0040.00416.90
8.0.140.0000.00716.81
8.0.130.0000.00513.32
8.0.120.0040.00416.78
8.0.110.0000.00716.91
8.0.100.0040.00416.99
8.0.90.0040.00416.89
8.0.80.0100.01016.77
8.0.70.0000.00816.72
8.0.60.0000.00716.61
8.0.50.0000.00816.82
8.0.30.0080.01316.82
8.0.20.0100.01017.40
8.0.10.0040.00416.80
8.0.00.0150.00616.75
7.4.330.0050.00015.00
7.4.320.0000.00616.43
7.4.300.0040.00416.53
7.4.290.0000.00716.57
7.4.280.0000.00716.43
7.4.270.0000.00716.48
7.4.260.0070.00316.50
7.4.250.0050.00316.51
7.4.240.0040.00416.49
7.4.230.0030.00516.27
7.4.220.0060.01516.52
7.4.210.0120.00916.34
7.4.200.0070.00016.50
7.4.160.0080.00816.23
7.4.150.0080.00817.40
7.4.140.0110.01017.86
7.4.130.0080.00916.48
7.4.120.0120.00716.48
7.4.110.0140.00316.46
7.4.100.0060.01216.55
7.4.90.0070.01016.31
7.4.80.0100.00719.39
7.4.70.0030.01316.41
7.4.60.0100.00716.41
7.4.50.0060.00316.38
7.4.40.0120.00316.37
7.4.30.0060.00916.43
7.4.00.0130.00314.80
7.3.330.0000.00512.93
7.3.320.0050.00013.04
7.3.310.0070.00016.23
7.3.300.0000.00716.21
7.3.290.0100.00316.24
7.3.280.0080.00916.18
7.3.270.0100.00717.40
7.3.260.0070.01016.23
7.3.250.0120.00816.39
7.3.240.0090.00616.29
7.3.230.0120.00616.51
7.3.210.0140.00316.08
7.3.200.0120.00319.39
7.3.190.0130.01016.31
7.3.180.0070.01016.26
7.3.170.0030.01416.29
7.3.160.0170.00016.45
7.3.120.0080.00415.07
7.2.330.0160.00616.31
7.2.320.0140.00416.64
7.2.310.0040.01716.39
7.2.300.0080.00816.39
7.2.290.0070.01016.64
7.2.00.0090.00618.87
7.1.100.0120.01817.95
7.1.70.0000.00817.16
7.1.60.0080.00419.25
7.1.50.0030.01716.86
7.1.00.0030.07322.45
7.0.200.0000.00716.70
7.0.140.0100.06322.04
7.0.60.0100.06320.00
7.0.50.0100.08017.81
7.0.40.0100.04019.98
7.0.30.0300.07720.19
7.0.20.0270.07720.19
7.0.10.0030.07720.02
7.0.00.0130.08020.11
5.6.280.0000.07320.91
5.6.210.0000.08720.74
5.6.200.0100.08318.23
5.6.190.0070.05720.41
5.6.180.3670.04320.63
5.6.170.0200.08320.61
5.6.160.0070.08320.54
5.6.150.0000.04018.22
5.6.140.0070.08318.17
5.6.130.0070.07018.14
5.6.120.0070.05721.01
5.6.110.0070.05721.00
5.6.100.0300.07021.10
5.6.90.0170.07721.12
5.6.80.0130.06720.41
5.6.70.4100.04320.39
5.5.350.0170.06720.34
5.5.340.0070.05717.88
5.5.330.0100.08020.29
5.5.320.3330.04020.31
5.5.310.0130.04720.18
5.5.300.0030.08717.94
5.5.290.0030.04317.89
5.5.280.0070.08720.77
5.5.270.0000.04320.75
5.5.260.0100.07720.72
5.5.250.0030.07020.54
5.5.240.0170.05320.12
5.4.450.0230.05319.29
5.4.440.0870.06319.24
5.4.430.0730.07019.46
5.4.420.0070.06019.51
5.4.410.0000.06719.42
5.4.400.0130.04719.22
5.4.390.0100.05019.05
5.4.380.0270.06018.75
5.4.370.0100.06318.50
5.4.360.0100.05718.68
5.4.350.0130.06018.45
5.4.340.0370.03718.72
5.4.320.0040.03912.45
5.4.310.0060.03912.45
5.4.300.0040.03812.45
5.4.290.0060.04112.45
5.4.280.0030.04012.35
5.4.270.0080.03512.35
5.4.260.0100.03512.35
5.4.250.0070.03812.34
5.4.240.0100.03112.35
5.4.230.0050.05012.34
5.4.220.0050.04312.34
5.4.210.0070.03512.34
5.4.200.0060.03712.34
5.4.190.0040.03712.34
5.4.180.0060.03512.33
5.4.170.0120.03712.35
5.4.160.0110.03512.34
5.4.150.0060.03612.34
5.4.140.0100.04212.02
5.4.130.0060.03712.01
5.4.120.0110.04111.96
5.4.110.0100.03911.96
5.4.100.0110.03911.96
5.4.90.0110.03811.96
5.4.80.0040.03911.96
5.4.70.0030.03811.96
5.4.60.0050.03611.96
5.4.50.0060.03411.96
5.4.40.0040.03711.95
5.4.30.0070.03311.95
5.4.20.0070.03411.95
5.4.10.0040.04111.95
5.4.00.0060.03611.44
5.3.290.0090.05212.80
5.3.280.0040.03812.71
5.3.270.0070.04712.72
5.3.260.0120.05112.72
5.3.250.0110.04912.72
5.3.240.0070.05212.72
5.3.230.0100.04912.71
5.3.220.0100.04212.68
5.3.210.0070.03712.68
5.3.200.0060.03612.68
5.3.190.0060.04612.68
5.3.180.0080.03412.68
5.3.170.0040.04512.66
5.3.160.0050.03812.67
5.3.150.0040.04012.67
5.3.140.0070.03912.66
5.3.130.0090.04512.66
5.3.120.0040.04112.66
5.3.110.0030.04112.66
5.3.100.0060.03712.11
5.3.90.0080.03312.09
5.3.80.0030.03712.07
5.3.70.0060.04612.08
5.3.60.0020.04012.07
5.3.50.0040.03812.00
5.3.40.0060.03612.00
5.3.30.0070.03411.94
5.3.20.0070.03911.72
5.3.10.0060.03611.71
5.3.00.0090.03811.67
5.2.170.0060.0319.17
5.2.160.0040.0299.17
5.2.150.0030.0329.18
5.2.140.0040.0329.17
5.2.130.0060.0309.13
5.2.120.0040.0299.13
5.2.110.0060.0309.13
5.2.100.0050.0309.14
5.2.90.0050.0309.13
5.2.80.0090.0319.13
5.2.70.0050.0449.13
5.2.60.0070.0309.09
5.2.50.0060.0309.05
5.2.40.0080.0289.03
5.2.30.0070.0309.01
5.2.20.0070.0288.99
5.2.10.0070.0288.92
5.2.00.0050.0278.77
5.1.60.0040.0238.06
5.1.50.0060.0268.05
5.1.40.0020.0288.04
5.1.30.0030.0278.39
5.1.20.0030.0338.41
5.1.10.0030.0368.13
5.1.00.0070.0228.13
5.0.50.0030.0206.61
5.0.40.0030.0266.47
5.0.30.0020.0336.29
5.0.20.0030.0196.25
5.0.10.0060.0206.23
5.0.00.0040.0306.22
4.4.90.0020.0164.78
4.4.80.0040.0144.75
4.4.70.0020.0164.75
4.4.60.0040.0144.75
4.4.50.0040.0144.77
4.4.40.0020.0274.71
4.4.30.0060.0124.76
4.4.20.0030.0154.84
4.4.10.0020.0174.85
4.4.00.0010.0274.76
4.3.110.0060.0134.67
4.3.100.0030.0144.66
4.3.90.0050.0124.63
4.3.80.0030.0244.58
4.3.70.0040.0134.63
4.3.60.0020.0164.63
4.3.50.0050.0134.63
4.3.40.0020.0244.53
4.3.30.0010.0173.28
4.3.20.0030.0143.25
4.3.10.0010.0213.22
4.3.00.0100.0177.21

preferences:
40.3 ms | 400 KiB | 5 Q